Smoke-free bliss

Similar to an e-cigarette, Open Vape pens have cartridges filled with purified cannabis oil. For the user, its discreet, smoke-free bliss.

Similar to an e-cigarette, Open Vape pens have cartridges filled with purified cannabis oil. For the user, its discreet, smoke-free bliss.

CNBC and correspondent Harry Smith tell the story behind this controversial and stunning development and report on the exploding legal pot market. Watch Marijuana in America: Colorado Pot Rush on Feb. 26 at 10 p.m. ET